US4904393A - Method for controlling overspray in paint spray booths - Google Patents
Method for controlling overspray in paint spray booths Download PDFInfo
- Publication number
- US4904393A US4904393A US07/199,969 US19996988A US4904393A US 4904393 A US4904393 A US 4904393A US 19996988 A US19996988 A US 19996988A US 4904393 A US4904393 A US 4904393A
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- US
- United States
- Prior art keywords
- tannin
- polymer
- added
- paint
- spray booth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/71—Paint detackifiers or coagulants, e.g. for the treatment of oversprays in paint spraying installations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
- B05B14/462—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material and separating the excess material from the washing liquid, e.g. for recovery
Definitions
- This invention relates to treatment of paint spray booth wastes and in particular to treatment of waste paint accumulated in spray booth process water using treatment formulations which prevent agglomeration of paint spray particles.
- this water is recirculated over the walls from a reservoir of water underneath the booth or in close proximity to it by means of pumps which are capable of moving a large flow of water through large diameter pipes.
- pumps which are capable of moving a large flow of water through large diameter pipes.
- the agglomeration and accumulation of live coating material in the water supply of these installations results in serious problems, such as blockage of the pipes and pumps which circulate the water, and a build-up of paint on the walls of the booth beyond the water curtain.
- the material removed from the air builds up in the water in the form of a tar-like coherent sludge which in a short time can foul the pumps and lines which circulate the booth's water.
- This combination provides extremely effective control of paint spray booth wastes, particularly at a pH between about 8 and about 11, and can serve as the basis for a paint spray control program which is organic in nature. Indeed, the preferred combination is free of clays which can present considerable dewatering problems, and free of amphoteric metals, such as zinc, which can present waste disposal concerns. Conventional dewatering aids such as hydrolyzed polyacrylamide polymer can be used to enhance coagulation and/or dewatering.
- the nitrogen-containing compound may be resin-forming urea or a resin-forming aminotriazine, such as urea, melamine, thiourea, guanidine, dicyandiamide, dicyanamidine, alkylureas, cyclic alkyleneureas, aminotriazines other than melamine, such as melam, melem, ammelide, and ammeline, substituted melamines, such as butylmelamine or phenylmelamine, guanamines, such as acetoguananamine, benzoguanamine, tetra hydrobenzoguanamine, stearoguanamine, etc.
- the preferred nitrogen-containing resin-forming compounds are urea, melamine and mixtures of these.
- the preferred resins are urea-formaldehyde resin, melamine-formaldehyde resin and urea-melamineformaldehyde resin.
- the nitrogen compound will simply be referred to as melamine, and formaldehyde will be used as representative of the aldehyde component.
- suitable water-dispersible melamine-formaldehyde resins can be prepared by reacting formaldehyde and melamine in the ratio of about 1 to 10 and usually about 2 to 8 moles of formaldehyde per mole of melamine.
- the product may be made cationic by reaction with an acid such as hydrochloric acid.
- the preparation of melamine-formaldehyde resin is not a part of the invention. Any of the well-known melamine-formaldehyde products available on the market may be used in the invention or, if desired, particular melamine-formaldehyde resins may be made.
- the melamine-formaldehyde resin is usually used in the form of a colloidal suspension achieved by raising the pH of the booth water to about 10.0 with caustic.
- aminotriazoleformaldehyde derivatives when aminotriazoleformaldehyde derivatives are used in accordance with this invention, they have a molecular weight between about 5,000 and 20,000 and a charge density between about 1.0 and 25.0 milliequivalents per gram (meq/g).
- anionic hydrolized polyacrylamides When used as the second component in accordance with this invention, they preferably have a molecular weight between about 12 million and about 15 million, and a charge density between about -0.2 and -1.5 meg/g/meg/g.
- the apparatus (10) comprises a spray chamber (12) which has a front wall (14), side walls (16) and (18), a rear wall (20) and a floor (22).
- An elevated reservoir (24) is positioned at the front wall (14) with the top edge (26) of the front wall forming the lowest side of the reservoir such that wastes overflowing from the reservoir form a water curtain for the front wall (14).
- Piping (52) directs the water from outlet (50) into the third mixing chamber (54) which comprises four walls (56) (57) (58) and (59), and floor (60).
- the open end (61) of inlet piping (62) for pump (64) is positioned in the mixing chamber (54) such that the pump (64) can be used to withdraw water from the mixing chamber. Water pumped from the mixing chamber (54) is directed through pump outlet piping (65) into the elevated reservoir (24).
- the top edge (21) of the rear wall (20) in spray chamber (12) terminates lower than the front top edge (26) of the front wall (14), and a paint spray gun (66) is positioned such that paint spray may be directed toward the front wall (14) from a distance of approximately nine inches.
- the capacity of the recirculating water system is about 14 liters and the recirculation rate is approximately 7.6 liters per minute.
- water circulation is begun to provide a curtain of water overflowing from top edge (26) toward floor (22) and passing adjacent to the front wall (14) of spray chamber (12). Paint is then sprayed from spray gun (66) toward the front wall (14) such that the spray becomes entrained in the water curtain.
- spray gun (66) toward the front wall (14) such that the spray becomes entrained in the water curtain.
- paint is sprayed at a rate within the range of from about 2.5 milliliters per minute to about 5.0 milliliters per minute, and the spraying continues until about 100 milliliters of paint has been sprayed.
- Two series of runs was made using a melamineformaldehyde product available as Deartek 2401 from Dearborn Division, W. R. Grace & Co. (reportedly having a molecular weight of about 10,000 and a charge density of about 2.0 meq/g) and a hydrolyzed polyacrylamide available as Aquafloc 477 from Dearborn Division, W. R. Grace & Co. (reportedly having a molecular weight of about 12 million to 15 million and a charge density of about -0.5 meq/g).
- the first series of runs used tap water having an alkalinity of about 300 ppm as CaCO 3 .
- a third run was made using the same procedure as the first run except that a prediluted high solid enamel clear coat/red base coat (as a 50:50 mix) paint was sprayed.
- the floating solids produced in this run were rated good to excellent.
- the second component may also be selected from certain modified tannins in further combination with either certain diallyldialkyl quaternary ammonium polymers or polymers derived by reacting dimethylamine, diethylamine or methylethylamine with an epihalohydrin.
- the modified tannin compounds which may be used in this invention are those formed by reacting condensed tannins such as extracts from quebracho wood or wattle bark, which are polyphenolic, with both an aldehyde, particularly formaldehyde, and an amino compound such as monoethanolamine, ammonia, and ammonium salts such as ammonium chloride.
- condensed tannins such as extracts from quebracho wood or wattle bark, which are polyphenolic
- an aldehyde particularly formaldehyde
- an amino compound such as monoethanolamine, ammonia, and ammonium salts such as ammonium chloride.
- the reaction between formaldehyde and amino compounds and a compound, such as a phenolic compound, which contains reactive hydrogen atoms is known as the Mannich Reaction.
- the molecular weight of the preferred modified tannin materials is considered to be within the range of 5,000 to 50,000.
- the tannin-based materials used in this invention have a charge density of between about 0.7 and about 5.0 milli
- the tannin-based component utilized in this invention is made in accordance with disclosure of U.S. Pat. No. 4,558,080, which is hereby incorporated in its entirety by reference.
- a component uses condensed polyphenolic tannins and is prepared under slightly acidic conditions where the pH is less than 7 and where the molar ratio of the primary amine from the amino compound to the tannin repeating unit is from about 1.5:1 to about 3.0:1.
- the reaction mixture is heated at a temperature of from about 150° to about 200° Fahrenheit until a reaction product forms which has an intermediate viscosity within a "key intermediate viscosity range" and the reaction is then terminated by external cooling, by adding quench water, and by adding acid.
- the "key intermediate viscosity range” is determined experimentally for each flocculant reaction system and is generally within a narrow range between about 2 and about 100 cps when measured at 180° Fahrenheit on a Brookfield LVT viscosimeter.
- the reaction is terminated by external cooling, by adding quench water, and by adding acid.
- the solids content of the resultant liquid flocculant is preferably about 20% to about 60% by weight and the pH is preferably less than 3.0.
- an antifoamer material such as silicon anti-foamer exemplified by Silicone B made by Dow Chemical Co., a mineral seal oil, or a high molecular weight alcohol is added to prevent excessive foaming.
- U.S. Pat. No. 4,558,080 describes the production of a tannin-based flocculant using monoethanolamine as the amino compound and formaldehyde as the aldehyde.
- a reactor containing 130.75 grams of de-ionized water was preheated to 150° F.
- Gradually 125.75 grams of Mimosa extract, available as a spray-dried tannin powder sold by Canadian Packers, Ltd. was gradually added while stirring. The temperature was maintained at about 130° to 140° Fahrenheit. After complete dissolution, the material was cooled to 110° Fahrenheit. Then 0.15 grams of a silicon antifoamer, Silicone B made by Dow Chemical, was added.
- aqueous tannin solution To the aqueous tannin solution, 47.65 grams of monoethanolamine was added to yield a primary amine to tannin ratio of 1.86:1 while mixing, and the temperature of the reaction mixture was allowed to rise to 130° Fahrenheit and it was maintained at this temperature until all of the amine was added. In order to maintain the acid conditions of the reaction mixture 80 grams of a 32% active hydrochloric acid was added to bring the pH in the range of 6.4 to 6.7 and the temperature was allowed to rise to 140° Fahrenheit. Upon forming its initial tannin/amine solution, the mixture was then cooled to 120° Fahrenheit.
- the formaldehyde was added in the form of 62.70 grams of 37% active formaldehyde and the temperature during this addition was maintained between 120° and 130° Fahrenheit.
- the solution was heated to initiate the reaction and the temperature was controlled so that it was not allowed to go above about 180° Fahrenheit.
- the viscosity of the solution was monitored using a Brookfield LVT viscosimeter where the samples were measured at temperatures of about 178° to 180° Fahrenheit. When the viscosity reading reached 38 to 40 cps, the desired degree of reaction was obtained.
- reaction material was quenched by the addition of external cooling and 45.20 grams of de-ionized water and 7.8 gram of muriatic acid to obtain a final pH of 2.4 and to obtain a solids content of about 40.2% and a final viscosity of 246 cps.
- a similar composition produced in accordance with U.S. Pat. No. 4,558,080 was available commercially as the product Klar-Aid 2400 produced by Dearborn Division, W. R. Grace & Co.
- This composition contained approximately 40% of a modified cationic tannin (mol. wt. about 10,000; charge density about 1.5-4.0) formed as the reaction product of Mimosa extract, formaldehyde, and monoethanolamine.
- a second series of two runs was made using deionized water adjusted to a pH of 10 using caustic and a treatment of about 480 ppm melamine formaldehyde, about 280 ppm aminomethylated tannin and about 400 ppm dimethylamine-epichlorohydrin polymer.
- a total of 100 milliliters of a high solids enamel red base coat automobile paint which had been prediluted with an organic solvent blend in accordance with standard practice was sprayed and the floating solids in the second and third mixing chambers were examined and rated. The solids were found to be less than 50 percent detackified.
- the second run in the series was made using the same procedure as the first except that a prediluted high solids enamel clear coat was used, and again the solids were found to be less than 50 percent detackified.
- the tannin-based component used in the examples was not considered a true solution, but more particularly, a hydrocolloidal suspension in which part of the molecule keeps the tannin in solution while the ethercyclic group is hydrophobic.
- the pH is preferably brought within the range of about 8 to 11 after addition of the tannin to the water of the paint spray apparatus to encourage formation of such a floc.
- the paint spray booth water be within this pH range during detackification in accordance with this invention.
- Examples of fruits are myrobalans, valonia, divi-divi, tara, and algarrobilla.
- Examples of leaves are sumac and gambier and examples of roots are canaigre and palmetto.
- the tannin extracts of many of these materials, and in particular the condensed polyphenolic tannin extracts, are thought to be sufficiently reactive to provide adequate flocculant qualities.
- aldehyde containing or generating reactants are organic chemical compounds which contain at least one aldehyde group therein, as are well-known and include, for example, formaldehyde, acetaldehyde, propionaldehyde, glycolaldehyde, glyoxylic acid and the like or polyaldehydes, i.e. organic compounds having more than one aldehyde group in the compound, such as glyoxal, paraformaldehyde and the like.
- suitable aldehyde reactants include aldehyde generating agents, i.e.
- diallyldimethyl quaternary ammonium polymer, and the dialkylamine epihalohydrin polymer particularly when highly charged appear to stabilize the formation of a pin floc provided by the melamineformaldehyde and the tannin-based components, therefore decreasing its size.
- the addition of the diallyldimethyl quaternary ammonium polymer and dialkylamine epihalohydrin polymer is considered important in certain embodiments of this invention for providing a floc with relatively high surface area and dispersing it. Detackification is thereby improved by facilitating the contact between the floc which is dispersed in water circulating in the paint spray apparatus, and paint which becomes entrained therein. The resulting detackified paint then forms a floating sludge.
- compositions comprising the combinations of this invention can be mixed prior to treatment and then used advantageously to treat spray booth wastewater, and accordingly, are considered to be within the scope of this invention.
- Such compositions typically contain between 1 and 30, preferably between 1 and 10 weight percent, total, of the first and second components of this invention in an aqueous composition.
- the storage stability of particular compositions of this invention may limit the length of time between mixing of components and effective use.
- the combinations of this invention are preferably free of clays so as to avoid dewatering problems associated with clay materials.
- the combinations of this invention are also preferably free of amphoteric metals, particularly zinc, which provide disposal concerns when the detackified solids are removed from the paint spray facility.
- the preferred combinations of this invention are organic in nature, and may advantageously consist essentially of the first and second components discussed above.
- detackified paint which floats is that some of the resulting sludges, such as those obtained with certain high solids base coats, are easily dewatered especially if sludge dewatering aids are further added. For example, a sludge containing about 68% solids was mechanically obtained using a laboratory plate and frame press. Nevertheless, following detackification of the water-entrained paint in accordance with this invention, and removal of the detackified particles from the system, as by flotation, further chemical treatment should generally be provided to more efficiently dewater the sludge. For example, for high solids enamel clear coat paint waste, conventional nonionic or anionic polymeric flocculants such as an anionic polyacrylamide polymer can be advantageously used to enhance sludge dewaterability.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
Claims (18)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/199,969 US4904393A (en) | 1988-05-27 | 1988-05-27 | Method for controlling overspray in paint spray booths |
AU35181/89A AU3518189A (en) | 1988-05-27 | 1989-05-25 | Method and composition for controlling overspray in paint spray booths |
ZA893961A ZA893961B (en) | 1988-05-27 | 1989-05-25 | Method and composition for controlling overspray in paint spray booths |
JP1131680A JP2830938B2 (en) | 1988-05-27 | 1989-05-26 | Methods and compositions for control of overspray in paint spray booths |
CA000605023A CA1319088C (en) | 1988-05-27 | 1989-07-07 | Method and composition for controlling overspray in paint spray booths |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/199,969 US4904393A (en) | 1988-05-27 | 1988-05-27 | Method for controlling overspray in paint spray booths |
Publications (1)
Publication Number | Publication Date |
---|---|
US4904393A true US4904393A (en) | 1990-02-27 |
Family
ID=22739775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/199,969 Expired - Fee Related US4904393A (en) | 1988-05-27 | 1988-05-27 | Method for controlling overspray in paint spray booths |
Country Status (5)
Country | Link |
---|---|
US (1) | US4904393A (en) |
JP (1) | JP2830938B2 (en) |
AU (1) | AU3518189A (en) |
CA (1) | CA1319088C (en) |
ZA (1) | ZA893961B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0428053A2 (en) * | 1989-11-15 | 1991-05-22 | W.R. Grace & Co.-Conn. | Method and composition for controlling overspray in paint spray booths |
US5068279A (en) * | 1989-01-12 | 1991-11-26 | Calgon Corporation | Low free formaldehyde melamine-formaldehyde detackifier and method of using |
US5143624A (en) * | 1991-05-02 | 1992-09-01 | Calgon Corporation | Methods for detackification of paint spray operation wastes |
US5248440A (en) * | 1992-01-30 | 1993-09-28 | W. R. Grace & Co.-Conn. | Paint spray booth treatment of waterborne coatings |
US5298186A (en) * | 1990-05-15 | 1994-03-29 | W. R. Grace & Co.-Conn. | Paint spray booth organic detackification treatment |
US5830315A (en) * | 1995-07-06 | 1998-11-03 | Betzdearborn Inc. | Treatment of Aqueous systems using a chemically modified tannin |
DE19732208A1 (en) * | 1997-07-26 | 1999-01-28 | Olt Oberflaechen Luft Und Troc | Water-operated device for picking up and settling paint particles |
US20040245181A1 (en) * | 2003-06-05 | 2004-12-09 | Foster Kathryn E. | Composition and method for treating paint booth water systems |
US6837931B1 (en) | 2004-01-29 | 2005-01-04 | Thierica, Inc. | Fluid washer for a spray booth |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5106767A (en) * | 1990-12-07 | 1992-04-21 | International Business Machines Corporation | Process for fabricating low capacitance bipolar junction transistor |
JP2010227887A (en) * | 2009-03-27 | 2010-10-14 | Nippon Rensui Co Ltd | Wastewater treatment method and wastewater treatment apparatus |
Citations (27)
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---|---|---|---|---|
US2345543A (en) * | 1942-07-31 | 1944-03-28 | American Cyanamid Co | Cationic melamine-formaldehyde resin solution |
US2485079A (en) * | 1944-01-04 | 1949-10-18 | American Cyanamid Co | Colloidal melamine-urea-formaldehyde copolymer solutions |
US2820777A (en) * | 1954-04-29 | 1958-01-21 | American Cyanamid Co | Process of preparing polyacrylamide |
US3288770A (en) * | 1962-12-14 | 1966-11-29 | Peninsular Chem Res Inc | Water soluble quaternary ammonium polymers |
US3515575A (en) * | 1968-03-06 | 1970-06-02 | Grace W R & Co | Process of deactivating and collecting paints with a water curtain |
US3738945A (en) * | 1972-02-04 | 1973-06-12 | H Panzer | Polyquaternary flocculants |
US3861887A (en) * | 1973-11-01 | 1975-01-21 | Steven W Forney | Process for controlling pollution and contamination in paint or lacquer spray booths |
US3953330A (en) * | 1972-08-25 | 1976-04-27 | Betz Laboratories, Inc. | Water-soluble cationic polymeric materials and their use |
US3990986A (en) * | 1974-12-19 | 1976-11-09 | Nalco Chemical Company | Composition for the clarification and detackification of paint spray booth wastes |
US3990869A (en) * | 1973-11-01 | 1976-11-09 | Nalco Chemical Company | Process for controlling pollution and contamination in paint or lacquer spray booths |
US4002490A (en) * | 1975-02-20 | 1977-01-11 | Nalco Chemical Company | Paint spray booth chemical treatment |
US4055495A (en) * | 1974-12-19 | 1977-10-25 | Nalco Chemical Company | Formulation and application of alkaline zinc chloride compositions and detackification of paint spray booth wastes |
US4440647A (en) * | 1983-02-09 | 1984-04-03 | Betz Laboratories, Inc. | Paint spray booth detackification composition and method |
US4504395A (en) * | 1984-02-07 | 1985-03-12 | Betz Laboratories, Inc. | Paint spray booth detackification composition and method |
US4548967A (en) * | 1984-04-19 | 1985-10-22 | Nalco Chemical Company | Masking agent for paint spray booths |
US4554026A (en) * | 1982-06-21 | 1985-11-19 | Nalco Chemical Company | Aqueous hydrotrope solutions for paint detackifiers |
US4558080A (en) * | 1984-01-24 | 1985-12-10 | Dearborn Chemical Company | Stable tannin based polymer compound |
US4563199A (en) * | 1981-09-28 | 1986-01-07 | Nalco Chemical Company | Paint spray booth emissions control process |
US4564464A (en) * | 1984-12-27 | 1986-01-14 | Betz Laboratories, Inc. | Hectorite based paint spray booth detackifying slurries and methods of use thereof |
US4600513A (en) * | 1984-09-05 | 1986-07-15 | Hakuto Chemical Co., Ltd. | Composition for the clarification and detackification of paint spray booth wastes |
US4629572A (en) * | 1986-02-27 | 1986-12-16 | Atlantic Richfield Company | Paint detackification method |
US4637824A (en) * | 1985-06-21 | 1987-01-20 | Atlantic Richfield Company | Paint detackification method |
US4656059A (en) * | 1984-11-01 | 1987-04-07 | Kurita Water Industries Ltd. | Wet spray booth treating agent and method for treatment therewith |
GB2185739A (en) * | 1986-01-28 | 1987-07-29 | Dearborn Chemicals Co | Composition and method for flocculating and removing solids suspended in water |
US4686047A (en) * | 1985-09-24 | 1987-08-11 | Calgon Corporation | Process for detackification of paint spray operation wastes |
US4715962A (en) * | 1986-08-15 | 1987-12-29 | Nalco Chemical Company | Ampholytic diallyldimethyl ammonium chloride (DADMAC) copolymers and terpolymers for water clarification |
US4753738A (en) * | 1987-08-07 | 1988-06-28 | Nalco Chemical Company | Sludge conditioning process |
-
1988
- 1988-05-27 US US07/199,969 patent/US4904393A/en not_active Expired - Fee Related
-
1989
- 1989-05-25 ZA ZA893961A patent/ZA893961B/en unknown
- 1989-05-25 AU AU35181/89A patent/AU3518189A/en not_active Abandoned
- 1989-05-26 JP JP1131680A patent/JP2830938B2/en not_active Expired - Lifetime
- 1989-07-07 CA CA000605023A patent/CA1319088C/en not_active Expired - Fee Related
Patent Citations (27)
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US2345543A (en) * | 1942-07-31 | 1944-03-28 | American Cyanamid Co | Cationic melamine-formaldehyde resin solution |
US2485079A (en) * | 1944-01-04 | 1949-10-18 | American Cyanamid Co | Colloidal melamine-urea-formaldehyde copolymer solutions |
US2820777A (en) * | 1954-04-29 | 1958-01-21 | American Cyanamid Co | Process of preparing polyacrylamide |
US3288770A (en) * | 1962-12-14 | 1966-11-29 | Peninsular Chem Res Inc | Water soluble quaternary ammonium polymers |
US3515575A (en) * | 1968-03-06 | 1970-06-02 | Grace W R & Co | Process of deactivating and collecting paints with a water curtain |
US3738945A (en) * | 1972-02-04 | 1973-06-12 | H Panzer | Polyquaternary flocculants |
US3953330A (en) * | 1972-08-25 | 1976-04-27 | Betz Laboratories, Inc. | Water-soluble cationic polymeric materials and their use |
US3861887A (en) * | 1973-11-01 | 1975-01-21 | Steven W Forney | Process for controlling pollution and contamination in paint or lacquer spray booths |
US3990869A (en) * | 1973-11-01 | 1976-11-09 | Nalco Chemical Company | Process for controlling pollution and contamination in paint or lacquer spray booths |
US3990986A (en) * | 1974-12-19 | 1976-11-09 | Nalco Chemical Company | Composition for the clarification and detackification of paint spray booth wastes |
US4055495A (en) * | 1974-12-19 | 1977-10-25 | Nalco Chemical Company | Formulation and application of alkaline zinc chloride compositions and detackification of paint spray booth wastes |
US4002490A (en) * | 1975-02-20 | 1977-01-11 | Nalco Chemical Company | Paint spray booth chemical treatment |
US4563199A (en) * | 1981-09-28 | 1986-01-07 | Nalco Chemical Company | Paint spray booth emissions control process |
US4554026A (en) * | 1982-06-21 | 1985-11-19 | Nalco Chemical Company | Aqueous hydrotrope solutions for paint detackifiers |
US4440647A (en) * | 1983-02-09 | 1984-04-03 | Betz Laboratories, Inc. | Paint spray booth detackification composition and method |
US4558080A (en) * | 1984-01-24 | 1985-12-10 | Dearborn Chemical Company | Stable tannin based polymer compound |
US4504395A (en) * | 1984-02-07 | 1985-03-12 | Betz Laboratories, Inc. | Paint spray booth detackification composition and method |
US4548967A (en) * | 1984-04-19 | 1985-10-22 | Nalco Chemical Company | Masking agent for paint spray booths |
US4600513A (en) * | 1984-09-05 | 1986-07-15 | Hakuto Chemical Co., Ltd. | Composition for the clarification and detackification of paint spray booth wastes |
US4656059A (en) * | 1984-11-01 | 1987-04-07 | Kurita Water Industries Ltd. | Wet spray booth treating agent and method for treatment therewith |
US4564464A (en) * | 1984-12-27 | 1986-01-14 | Betz Laboratories, Inc. | Hectorite based paint spray booth detackifying slurries and methods of use thereof |
US4637824A (en) * | 1985-06-21 | 1987-01-20 | Atlantic Richfield Company | Paint detackification method |
US4686047A (en) * | 1985-09-24 | 1987-08-11 | Calgon Corporation | Process for detackification of paint spray operation wastes |
GB2185739A (en) * | 1986-01-28 | 1987-07-29 | Dearborn Chemicals Co | Composition and method for flocculating and removing solids suspended in water |
US4629572A (en) * | 1986-02-27 | 1986-12-16 | Atlantic Richfield Company | Paint detackification method |
US4715962A (en) * | 1986-08-15 | 1987-12-29 | Nalco Chemical Company | Ampholytic diallyldimethyl ammonium chloride (DADMAC) copolymers and terpolymers for water clarification |
US4753738A (en) * | 1987-08-07 | 1988-06-28 | Nalco Chemical Company | Sludge conditioning process |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5068279A (en) * | 1989-01-12 | 1991-11-26 | Calgon Corporation | Low free formaldehyde melamine-formaldehyde detackifier and method of using |
EP0428053A2 (en) * | 1989-11-15 | 1991-05-22 | W.R. Grace & Co.-Conn. | Method and composition for controlling overspray in paint spray booths |
EP0428053A3 (en) * | 1989-11-15 | 1992-04-15 | W.R. Grace & Co.-Conn. | Method and composition for controlling overspray in paint spray booths |
US5298186A (en) * | 1990-05-15 | 1994-03-29 | W. R. Grace & Co.-Conn. | Paint spray booth organic detackification treatment |
US5143624A (en) * | 1991-05-02 | 1992-09-01 | Calgon Corporation | Methods for detackification of paint spray operation wastes |
US5248440A (en) * | 1992-01-30 | 1993-09-28 | W. R. Grace & Co.-Conn. | Paint spray booth treatment of waterborne coatings |
US5830315A (en) * | 1995-07-06 | 1998-11-03 | Betzdearborn Inc. | Treatment of Aqueous systems using a chemically modified tannin |
US5843337A (en) * | 1995-07-06 | 1998-12-01 | Betzdearborn Inc. | Treatment of aqueous systems using a chemically modified tannin |
US5977287A (en) * | 1995-07-06 | 1999-11-02 | Betzdearborn Inc. | Treatment of aqueous systems using a chemically modified tannin |
DE19732208A1 (en) * | 1997-07-26 | 1999-01-28 | Olt Oberflaechen Luft Und Troc | Water-operated device for picking up and settling paint particles |
EP0893163A3 (en) * | 1997-07-26 | 2000-12-06 | OLT Oberflächen-, Luft- und Trocknungstechnik GmbH | Hydraulic device for the interception and the sedimentation of paint particles |
DE19732208C2 (en) * | 1997-07-26 | 2001-03-01 | Olt Oberflaechen Luft Und Troc | Water-operated device for picking up and settling paint particles |
US20040245181A1 (en) * | 2003-06-05 | 2004-12-09 | Foster Kathryn E. | Composition and method for treating paint booth water systems |
US7179385B2 (en) * | 2003-06-05 | 2007-02-20 | Henkel Kommanditgesellschaft Auf Aktien | Method for treating paint booth water systems |
US6837931B1 (en) | 2004-01-29 | 2005-01-04 | Thierica, Inc. | Fluid washer for a spray booth |
Also Published As
Publication number | Publication date |
---|---|
JPH0217969A (en) | 1990-01-22 |
AU3518189A (en) | 1989-11-30 |
JP2830938B2 (en) | 1998-12-02 |
CA1319088C (en) | 1993-06-15 |
ZA893961B (en) | 1990-02-28 |
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